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Finding the Fourth Proportional to 123,572.88, 170,517.96 and 75,828.24

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Solution

The fourth proportional to 123,572.88, 170,517.96 and 75,828.24 is: 104,635.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,572.88 : 170,517.96 = 75,828.24 : x
  2. Step 2: Convert to fraction form
    123,572.88/170,517.96 = 75,828.24/x
  3. Step 3: Cross multiply
    123,572.88x = 170,517.96 × 75,828.24
  4. Step 4: Simplify right side
    123,572.88x = 12,930,076,795.19
  5. Step 5: Solve for x
    x = 12,930,076,795.19/123,572.88
  6. Step 6: Final answer
    x = 104,635.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.